5:46 But I didn't get it. There's still a non-symmetry on the sides of the material, but now vertically. The positive layer will appear on top and the negative at the bottom. And then apparently at 9:05 the incident and absorbed components would become collinear according to this. Doesn't make sense. I mean if we would only focus on mathematical aspects, then circle integral is 0, hence then incident tangential field = tangential absorbed, while normal components are scaled by epsilon from each side and due to that difference in scalars we have a "bending" of the absorbed field inside the material. Idk, however, what happens at the atomic level of things, but in a way it's presented at 5:46, the top and bottom layer of material will be out of pair to be cancelled, hence would induce some vertical field inside the material which would compensate incident field thus cancelling a "bending" of the field inside a material. Its something wrong about the diagram.
